A new study of travel habits has shown that the biggest polluters are the people who are environmental conscious.
Geoff Wicken, the author of the report, said that people who claim to be environment friendly have some of the biggest carbon footprints because they are still hooked on flying abroad or driving their cars.
In contrast, their adherence to the green cause is mostly limited to small gestures, reports the Telegraph.
Such people are called 'eco-adopters', and they are most likely to be members of an environmental organisation.
They buy green products such as detergents, recycle and are devoted to green issues.
However, the survey of 25,000 people, conducted by the market research company Target Group Index, showed that eco-adopters are seven per cent more likely than the general population to take flights, and four per cent more likely to own a car.
The similar trends were found in France and the U.S.